A configurable version of the vanilla GenLayerBiomeEdge. Replaces biomes with objectionable 
neighbors with biomes that make more sense.



Constructor:
    Arguments:
        long, GenLayer
    Argument Usage:
        base layer seed, parent layer
    Notes:
        Constructs the layer with its seed and parent layer.

addBiomeEdge:
    Arguments:
        Non_Null_Biome_ID_Array, Non_Null_Biome_ID
    Usage:
        biome IDs, edge biome ID
    Notes:
        Adds a biome edge for the provided biomes with no whitelist or blacklist.

addBiomeEdge:
    Arguments:
        Non_Null_Biome_ID_Array, Biome_ID_Array, Biome_ID_Array, Non_Null_Biome_ID
    Usage:
        biome IDs, whitelist, blacklist, edge biome ID
    Notes:
        Adds a biome edge for the provided biomes with a whitelist/blacklist.